Bolster.



- PATENTED OCT. 29. 1907.

O. S. vPULLIAM.

BOLSTE'R. Pmoulon FILED 11:13.. 1907.

0.71/1 Il!!! lV lill! wl-rNEEEEE:

ATTORNEY UNITED STATES t PATENT OFFICE.

OSWALD S. PULLIAM,OF PITTSBURG, PENNSYLVANIA., ASSIGNOR TO PITTSBURGHEQUIPMENT COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OFPENNSYLVANIA.

BoLs'TER.

iva-869,651.

Application filed February 9 -To all whom lit may concern:

Be it known that I, OswALD S. Putman, of Pittsburg, in the county ofAllegheny and State of Pennsyl- .vania,have invented certain new anduseful Improvements in Bolsters, of which the following is aspecification.

Y The prime object of my invention is to provide new and improved meansfor uniting the ends of the Acompression and tension-members of ametallic car-bolster whereby most of the strains occurring in 'practiceat the ends of said members are taken care oi by strong end-,members orcastings instead of the rivets usually Aemployed for this purpose.

To this end the present invention consists of a new and improved carbolster, in the novel features of construction, and in the combinationotparts all as fully `hereinafter described and claimed.

In vthe accompanying drawing, which illustraws ap- ,plications of myinvention, Figure 1 is a perspective View of a car-truck bolsterconstructed in accordance with my invention; Fig. 2 a detail sectionalview pai` ticulariy showing one forni of means for uniting the ends ofthe compression and tension-members; Fig. 3 a sectional view taken ouline 3-3 of Fig. 2; and Figs. 4 and 5 detail sectional views showingmodified forms oi f my invention.

Referring to the drawiug,as illustrated and as prefer-red, thecompression-member l is in the form of an I-beam and the tension-member2 formed of a bent l by Figs.A 4 and.

'In the form of Fig. 4 the ends of `the tension-member are turned downto form engaging-flanges 2 and in the form of Fig. 5 the ends are turnedup to form simil-.rr

flanges.

The means for uniting the respectivo ends of the compressionandtension-members comprise a coui- I members as shown by Figs. 2 and 5, ormade in two parts as shown by Fig. '4. In addition to the end membersthe uniting means as shown comprise a plurality of rivets 4 designed tobe passed through the end.

specification of Letters Patent.

. 1907. 4 Serial No. 356.563.

Patented, Oct. 29, 1907.

members as weil as the meeting ends, of the compresl` sion andtension-members. '.lhe resi ectivo end-inembers are each designed tooverlap and clasp the ends of boththe compression and tension-members.

Column-guides 'are formed on the ends of the endmembcrs as particularlyshown by Fig. i. The ends of the respective compression andtension-members are securely claimpcd`witliin the end-members and saidend-members sustain the heavy or main strains of both the compressionand tension-members while the rivets sustain comparatively littlestrain.

Ii desired the end-members or castings may be cast on the ends ot' thecompression and tension-members instead of forming the end-memberslseparately and then uniting them by means of the rivets.

What. I claim is;

, l. A bolster comprising a compression-member and a teusionmemberhaving their respective ends in Contact with one another, andcomparatively heavy end-memhers overlapping 'and adapted to receive thecontacting endsnof both the compression and tension-members and tosustain the main strains of both of the latter members.

:5. Al bolster coniprisine: a compressionmember, a -tension-nmnber, andmoans ini' uniting the ends of said members comprisingoverlappingendjmembcrs in which the re spcctire ends oi. both thecompression and tension-members moet; und rivets passed through the endsofthe compression and tension-members and the respective endunembers.

3. A bolster comprising a compression member, a tension-member, undmenns for joining thc respective ends of said members comprising :icasting' overlapping the ends ot' the compression und tcnsioimneniberssaid casting ,and ends rigidi".1 joined by rivets l.. d through thecasting and4 the ends ot' the said i fmbers.

4. A bolster comprising a compression-membcr of I-bcam form. atension-member having its euds bent up over the ends ot thecouipression-membcr, means for uniting the ends ol" said members undsustaining the heavy strains o1' said members comprising a comparativelyheavy casting in which the ends of said members ure located, andrivetspassed through the costing and ends of the compression andtmision-members,

5. A bolster comprisingT a compressionmemben a tension-member formedwith end eiigagingriiunges said members having' their respective 'endsin contact with one another. und comparatively heavy end-membcrsoverlappingr the contacting ends of both members and provided with moansfor eue-aging the Ilanged ends of the tensionmcmber.

In testimony wher-colf l affix my :signature in presence of twowitnesses.

OSWALD S. IULLIAM.

Witnesses:

MARGARET HUGHES, W. G. Dooni'rrnn.

